Unique motor type motor driven column apparatus

ABSTRACT

A unique motor type motor driven column apparatus may include a motor attached to a telescoping tube that slidably receives a column tube therein, wherein the telescoping tube may be pivotally coupled with a vehicle body by a tilt bracket, an actuating rod rotating by the motor, a tilt mechanism including a tilt clutch receiving the actuating rod therethrough and selectively engaged therebetween by a motor controller such that a rotation force of the actuating rod may be converted into a linear movement of the tilt mechanism to make a tilt motion of the column tube, and a telescoping mechanism including a telescoping clutch receiving the actuating rod therethrough and selectively engaged therebetween by the motor controller such that a rotation force of the actuating rod may be converted into a linear movement of the telescoping mechanism so as to make a telescoping motion of the column tube.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims priority to Korean Patent ApplicationNumber 10-2010-0123777 filed Dec. 6, 2010, the entire contents of whichapplication is incorporated herein for all purposes by this reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a motor driven column apparatus, andmore particularly, to a unique motor type motor driven column apparatususing one unified motor to implement tilt and telescoping motions.

2. Description of Related Art

In general, motor driven power steering (MDPS) systems which are motordriven steering systems are a type which does not use fluid pressure andassists steering power with motor power, and are mainly applied tocompact vehicles.

An MDPS system has a decelerator including a worm shaft and a worm wheelrotating by a motor in order to assist the steering power, and uses amotor driven column apparatus having a tilt motor and a telescopingmotor to implement tilt and telescoping motions, respectively.

An MDPS motor is controlled by an MDPS ECU, and the tilt motor and thetelescoping motor are controlled by a separate tilt/telescoping ECU.

As importance of improvement of fuel efficiency of vehicles isemphasized, there is a trend in that the MDPS systems should benecessarily applied to not only compact vehicles but also mid-size andfull-size vehicles.

FIG. 8 shows a motor driven column apparatus having an MDPS motor, atilt motor, a telescoping motor, and an MDPS ECU and a tilt/telescopingECU for controlling those motors as described above.

As shown in FIG. 8, the motor driven column apparatus has an MDPS motor200 and a decelerator for assisting steering power provided in a columntube 100 covering a steering shaft 100 a, a tilt mechanism for tiltingcolumn tube 100 up and down, and a telescoping mechanism for telescopingtransmission.

The tilt mechanism includes a tilt motor 300 which is a power source, adeceleration gear 301 decelerating the rotation of the motor andincreasing torque, and a tilt rod 302 moving a tilt bracket 303 by anoutput of deceleration gear 301.

The telescoping mechanism includes a telescoping motor 400 which is apower source, a deceleration gear 401 decelerating the rotation of themotor and increasing torque, and a telescoping rod 402 moving atelescoping bracket 403 by an output of deceleration gear 401.

Also, an MDPS ECU 210 for controlling MDPS motor 200 and atilt/telescoping ECU 500 for controlling tilt motor 300 and telescopingmotor 400 are provided, respectively. MDPS ECU 210 is configured toreceive a signal of an MDPS motor/angle sensor, and tilt/telescoping ECU500 is configured to receive signals of a tilt motor/angle sensor and atelescoping motor/angle sensor.

However, since the tilt mechanism having MDPS motor 200 for assistingthe steering power and the tilt mechanism having tilt motor 300 and thetelescoping mechanism having telescoping motor 400 are separatelyprovided to the motor driven column apparatus as described above, astructure for tilt and telescoping operations is complex, andespecially, when the motor driven column apparatus is installed togetherwith a knee airbag, a column collision absorption structure, etc., it isvery difficult to secure a package.

The information disclosed in this Background of the Invention section isonly for enhancement of understanding of the general background of theinvention and should not be taken as an acknowledgement or any form ofsuggestion that this information forms the prior art already known to aperson skilled in the art.

BRIEF SUMMARY

Various aspects of the present invention are directed to providing aunique motor type motor driven column apparatus which uses one unifiedmotor as a power source to implement tilt and telescoping motions,thereby simplifying a tilt and telescoping structure and making it easyto ensure a package of a knee airbag, a column collision absorptionstructure, etc.

In an aspect of the present invention, the unique motor type motordriven column apparatus, may include a motor attached to a telescopingtube that slidably receives a column tube therein, wherein thetelescoping tube may be pivotally coupled with a vehicle body by a tiltbracket, an actuating rod rotating by the motor, a tilt mechanismincluding a tilt clutch receiving the actuating rod therethrough andselectively engaged therebetween by a motor controller such that arotation force of the actuating rod may be converted into a linearmovement of the tilt mechanism so as to make a tilt motion of the columntube, and a telescoping mechanism including a telescoping clutchreceiving the actuating rod therethrough and selectively engagedtherebetween by the motor controller such that a rotation force of theactuating rod may be converted into a linear movement of the telescopingmechanism so as to make a telescoping motion of the column tube.

The tilt mechanism may further include a first block housing, and afirst moving block operably mounted in the first block housing with apredetermined gap therebetween so that the actuating rod passes throughand may be engaged with the first moving block, and wherein the firstmoving block may include a first groove formed on an outer surfacethereof.

The tilt clutch may include a plug rod which may be selectively engagedwith the first groove through an opening formed in the first blockhousing by the motor controller.

The tilt bracket may be pivotally coupled with the first block housingand the vehicle body.

A tilt sensor may include a moving knob fixed to the first blockhousing, and a potentiometer installed in the telescoping tube at aposition of the moving knob to sense a position change of the movingknob according to the tilt motion so as to signal tilting amount to themotor controller.

The telescoping mechanism further may include a second block housing,and a second moving block operably mounted in the second block housingwith a predetermined gap therebetween so that the actuating rod passesthrough and may be engaged with the second moving block, and wherein thesecond moving block may include a second groove formed on an outersurface thereof.

The telescoping clutch may include a plug rod which may be selectivelyengaged with the second groove through an opening formed in the secondblock housing.

The telescoping mechanism further may include a telescoping rod, an endof which may be attached to the second block housing and the other endof which may be attached to a support bracket coupled to the columntube.

A telescoping sensor may include a moving knob fixed to the second blockhousing, and a potentiometer installed in the telescoping tube at aposition of the moving knob to sense a position change of the movingknob according to the telescoping motion so as to signal telescopingamount to the motor controller.

The motor driven column apparatus according to the exemplary embodimentof the present invention uses a unified motor as a power source forimplementing tilt and telescoping motions. Therefore, it is possible tosimplify a tilt and telescoping structure and make it easy to ensure apackage of a knee airbag, a column collision absorption structure, etc.

The methods and apparatuses of the present invention have other featuresand advantages which will be apparent from or are set forth in moredetail in the accompanying drawings, which are incorporated herein, andthe following Detailed Description, which together serve to explaincertain principles of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view illustrating a configuration of a unique motor typemotor driven column apparatus according to an exemplary embodiment ofthe present invention.

FIGS. 2A and 2B are views illustrating configurations of tilt andtelescoping clutches of the unique motor type motor driven columnapparatus according to the exemplary embodiment of the presentinvention.

FIGS. 3A and 3B are views illustrating configurations of potentiometersof the unique motor type motor driven column apparatus according to theexemplary embodiment of the present invention.

FIGS. 4 and 5 are views illustrating tilt operations of the unique motortype motor driven column apparatus according to the exemplary embodimentof the present invention.

FIGS. 6 and 7 are views illustrating telescoping operations of theunique motor type motor driven column apparatus according to theexemplary embodiment of the present invention.

FIG. 8 is a view illustrating a configuration of a motor driven columnapparatus having an MDPS motor, a tilt motor, and a telescoping motor,and an MDPS ECU and a tilt/telescoping ECU for controlling the motorsaccording to the related art.

It should be understood that the appended drawings are not necessarilyto scale, presenting a somewhat simplified representation of variousfeatures illustrative of the basic principles of the invention. Thespecific design features of the present invention as disclosed herein,including, for example, specific dimensions, orientations, locations,and shapes will be determined in part by the particular intendedapplication and use environment.

In the figures, reference numbers refer to the same or equivalent partsof the present invention throughout the several figures of the drawing.

DETAILED DESCRIPTION

Reference will now be made in detail to various embodiments of thepresent invention(s), examples of which are illustrated in theaccompanying drawings and described below. While the invention(s) willbe described in conjunction with exemplary embodiments, it will beunderstood that present description is not intended to limit theinvention(s) to those exemplary embodiments. On the contrary, theinvention(s) is/are intended to cover not only the exemplaryembodiments, but also various alternatives, modifications, equivalentsand other embodiments, which may be included within the spirit and scopeof the invention as defined by the appended claims.

Hereinafter, an exemplary embodiment of the present invention will bedescribed in detail with reference to the accompanying illustrativedrawings. The exemplary embodiment is an example and may be implementedin various different forms by those skilled in the art. Therefore, thepresent invention is not limited to the exemplary embodiment to bedescribed here.

FIG. 1 is a view illustrating a configuration of a unique motor typemotor driven column apparatus according to an exemplary embodiment ofthe present invention. Referring to FIG. 1, the motor driven columnapparatus includes a column tube 1 joined with a mounting bracket 2mounted to a vehicle body 800 and covering a steering shaft 1 a, an MDPSmotor 3 controlled by an MDPS motor ECU 3 a and installed in column tube1, a unified motor 5 controlled by a unified motor ECU 4, generatingpower for tilt and telescoping motions of steering shaft 1 a, andinstalled in telescoping tube 30, a decelerator 6 decelerating therotation of unified motor 5 and increasing a torque output, and anactuating rod 7 aligned along an axis direction of column tube 1 androtating by decelerator 6.

Decelerator 6 and actuating rod 7 are connected to each other as a screwand nut structure for decelerating the rotation of unified motor 5.

Actuating rod 7 has a thread formed on the outer circumference surfacealong the overall length.

Actuating rod 7 is supported at one or more positions. To this end, arod support end 31 integrally formed with a telescoping tube 30 coveringcolumn tube 1 supports the middle portion of actuating rod 7.

The motor driven column apparatus further includes a tilt mechanism 10engaged with actuating rod 7 to implement a tilt motion by a linearmovement of actuating rod 7, a telescoping mechanism 20 engaged withactuating rod 7 inside tilt mechanism 10 to implement a telescopingmotion by rotation of actuating rod 7, and a tilt sensor 40 and atelescoping sensor 50 sensing a motion of tilt mechanism 10 and a motionof telescoping mechanism 20 and transmitting signals to unified motorECU 4.

FIGS. 2A and 2B show internal configurations of clutches of the tilt andtelescoping mechanisms according to the exemplary embodiment of thepresent invention. As shown in FIG. 2A, tilt mechanism 10 includes atilt clutch 11, a block housing 13, a moving block 14, and a tiltbracket 18.

Tilt clutch 11 has a plug rod 12 controlled by unified motor ECU 4 to bedrawn from and into tilt clutch 11. In an exemplary embodiment of thepresent invention, the tilt clutch 11 may be an electromagnetic actuatoror pneumatic actuator but limited thereto so as to move the plug rod 12as generally known in the art.

Actuating rod 7 passes through block housing 13, and block housing 13has an opening 13 a from and into which plug rod 12 of tilt clutch 11 isdrawn. Moving block 14 is accommodated in block housing 13 with apredetermined gap therebetween and is locked by or released from plugrod 12. Actuating rod 7 is coupled with moving block 14 in ascrew-coupling manner, and passes through moving block 14. Tilt bracket18 is connected from block housing 13 to mounting bracket 2 to tiltcolumn tube 1.

If moving block 14 is not locked by plug rod 12 of tilt clutch 11,moving block 14 rotates idle with actuating rod 7 at the same placesince the moving block 14 is spaced with the block housing 13 with agap. If moving block 14 is locked with the actuating rod 7 by plug rod12 of tilt clutch 11 being positioned into a groove 140 formed alongouter surface of the moving block 14, moving block 14 linearly moves byactuating rod 7.

A tilt motion is implemented by the above-mentioned linear movement ofmoving block 14.

Also, inside block housing 13, a pair of inner rings 15 and 16 ispositioned on both sides (i.e. left and right) of moving block 14.Outside block housing 13, an outer ring 17 is positioned.

As shown in FIG. 3A, a lower end portion of tilt bracket 18 is linkedwith block housing 13 by a lower end hinge shaft 19 a, and an upper endportion of tilt bracket 18 is linked with mounting bracket 2 by an upperend hinge shaft 19 b.

As described above, tilt bracket 18 forms a two-point hinge structure,such that, during tilt, the lower end portion of tilt bracket 18 linkedby lower end hinge shaft 19 a is pushed aside and rotates. In this case,upper end hinge shaft 19 b acts as a rotation shaft for tilt bracket 18.

Therefore, tilt bracket 18 can tilt column tube 1 by the movement of thelower end portion linked by lower end hinge shaft 19 a without amovement of the upper end portion linked by upper end hinge shaft 19 b.

Tilting column tube 1 up is implemented by a counterclockwise rotationof tilt bracket 18, and tilting column tube 1 down is implemented by aclockwise rotation of tilt bracket 18.

Telescoping mechanism 20 shown in FIG. 2B includes a telescoping clutch21, a block housing 23, a moving block 24, a telescoping rod 28, andtelescoping tube 30. Telescoping clutch 21 has a plug rod 22 controlledby unified motor ECU 4 to be drawn from and into telescoping clutch 21.

In an exemplary embodiment of the present invention, the telescopingclutch 21 may be an electromagnetic actuator pneumatic actuator butlimited thereto so as to move the plug rod 22 as generally known in theart.

Actuating rod 7 passes through block housing 23, and block housing 23has an opening 23 a from and into which plug rod 22 of telescopingclutch 21 is drawn. Moving block 24 is accommodated in block housing 23and is locked or released by plug rod 22. Actuating rod 7 is coupledwith moving block 24 in a screw-coupling manner, and passes throughmoving block 24. Telescoping rod 28 is fixed to block housing 23 andguides the movement of support bracket 8 to which the telescoping rod 28is connected, wherein the support bracket 8 is joined with column tube1. Telescoping tube 30 is fixed to block housing 23 to be capable of atelescoping movement and covers column tube 1.

If moving block 24 is not locked by plug rod 22 of telescoping clutch21, moving block 24 rotates idle with actuating rod 7 at the same placesince the moving block 24 is spaced with the block housing 23 with agap. If moving block 24 is locked with actuating rod 7 by plug rod 22 oftelescoping clutch 21 being positioned into a groove 240 formed alongouter surface of the moving block 24, moving block 24 linearly moves bythe actuating rod 7.

The telescoping motion is implemented by the above-mentioned linearmovement of moving block 24.

Also, inside block housing 23, a pair of inner rings 25 and 26 ispositioned on both sides (i.e. left and right) of moving block 24.Outside block housing 23, an outer ring 27 is positioned.

In the exemplary embodiment, as described above, telescoping tube 30 isintegrally formed with rod support end 31 supporting the middle portionof actuating rod 7.

FIGS. 3A and 3B are views illustrating configurations of tilt andtelescoping sensors of the unique motor type motor driven columnapparatus according to the exemplary embodiment of the presentinvention. As shown in FIG. 3A, tilt sensor 40 includes a moving knob 41fixed to block housing 13 in perpendicular to block housing 13 insidetilt bracket 18 to follow the tilt motion, and a potentiometer 42horizontally installed at the position of moving knob 41 to sense aposition change of moving knob 41 according to the tilt motion.

In the exemplary embodiment, as described above, tilt sensor 40transmits a signal based on the sensed tilt motion to unified motor ECU4.

As shown in FIG. 3B, telescoping sensor 50 includes a moving knob 51fixed to block housing 23 in perpendicular to block housing 23 to followthe telescoping motion, and a potentiometer 52 horizontally installed atthe position of moving knob 51 to sense a position change of moving knob51 according to the telescoping motion.

In the exemplary embodiment, as described above, telescoping sensor 50transmits a signal based on the sensed telescoping motion to unifiedmotor ECU 4.

FIG. 4 shows a tilt operation state of the unique motor type motordriven column apparatus according to the exemplary embodiment of thepresent invention. If a tilt motion is implemented, the rotation ofunified motor 5 driven by the control of unified motor ECU 4 isdecelerated by decelerator 6 and is converted into a motion for movingactuating rod 7 forward (in a case of tilting column tube 1 up) whilerotating actuating rod 7.

At the same time, unified motor ECU 4 differently controls tilt clutch11 of tilt mechanism 10 and telescoping clutch 21 of telescopingmechanism 20, such that the tilt motion can be implemented by theoperation of tilt mechanism 10 without interference of telescopingmechanism 20.

That is, during tilt, unified motor ECU 4 draws plug rod 12 of tiltclutch 11 into opening 13 a of block housing 13 while drawing out plugrod 22 of telescoping clutch 21 from opening 23 a of block housing 23.

Therefore, moving block 14 of tilt mechanism 10 is locked by plug rod 12(a locked state Ka), while moving block 24 of telescoping mechanism 20is released from plug rod 22 (a released state Kb), such that movingblock 14 of tilt mechanism 10 moves forward along actuating rod 7without rotating, while moving block 24 of telescoping mechanism 20rotates idle at the same place without moving forward along actuatingrod 7.

If moving block 14 of tilt mechanism 10 moves forward as describedabove, the forward movement force of moving block 14 is converted into aforce for pushing block housing 13 through inner ring 16.

That is, if the tilt motion is implemented, moving block 14 of tiltmechanism 10 moves forward along actuating rod 7 moving forward whilerotating so as to push block housing 13. As block housing 13 is pushed,tilt bracket 18 moves up while rotating so as to tilt column tube 1 up.

The motion of tilt bracket 18 for tilting column tube 1 up isimplemented by an action of lower end hinge shaft 19 a and upper endhinge shaft 19 b forming the two-point hinge structure of tilt bracket18.

That is, if tilt bracket 18 receives a pushing force by block housing13, the lower end portion of tilt bracket 18 linked by lower end hingeshaft 19 a is pushed while rotating. In this case, the upper end portionof tilt bracket 18 linked by upper end hinge shaft 19 b acts as therotation shaft of tilt bracket 18. As a result, tilt bracket 18 tiltscolumn tube 1 up by the movement of the lower end portion without themovement of the upper end portion.

In the exemplary embodiment, if unified motor 5 reversely rotates byunified motor ECU 4 (when the rotation direction of unified motor 5 fortitling column tube 1 up is referred to as a normal direction),actuating rod 7 moves backward while reversely rotating, such that tiltbracket 18 clockwise rotates so as to tilt column tube 1 down. That is,an operation process for tilting column tube 1 down is the same as theabove-mentioned operation process for tilting column tube 1 up, exceptfor the operation directions of the components.

FIG. 5 shows an operation state for detecting the tilt motion duringtilt according to the exemplary embodiment of the present invention. Ifthe tilt motion is implemented, in tilt mechanism 10, block housing 13is pushed or pulled by moving block 14 to push or pull tilt bracket 18.The motion of block housing 13 moves moving knob 41, fixed to blockhousing 13 in perpendicular thereto, in the same direction as blockhousing 13.

The motion of moving knob 41 causes a position change of moving knob 41relative to potentiometer 42, and potentiometer 42 transmits an electricsignal corresponding to the position change of moving knob 41 to unifiedmotor ECU 4.

Therefore, unified motor ECU 4 can exactly recognize the progressiondegree of the tilt motion, and thus, unified motor ECU 4 can greatlyimprove the accuracy of the tilt motion.

FIG. 6 shows a telescoping operation state of the unique motor typemotor driven column apparatus according to the exemplary embodiment ofthe present invention. If the telescoping motion is implemented, therotation of unified motor 5 driven by the control of unified motor ECU 4is decelerated by decelerator 6 and then is converted into a motion formoving actuating rod 7 forward (assuming a case of performing forwardtelescoping) while rotating actuating rod 7.

At the same time, unified motor ECU 4 differently controls tilt clutch11 of tilt mechanism 10 and telescoping clutch 21 of telescopingmechanism 20, such that the telescoping motion can be implemented by theoperation of telescoping mechanism 20 without interference of tiltmechanism 10.

That is, during telescoping, unified motor ECU 4 draws out plug rod 12of tilt clutch 11 from opening 13 a of block housing 13 while drawingplug rod 22 of telescoping clutch 21 into opening 23 a of block housing23.

Therefore, moving block 24 of telescoping mechanism 20 is locked by plugrod 22 (locked state Kc), while moving block 14 of tilt mechanism 10 isreleased from plug rod 12 (released state Kd), such that moving block 24of telescoping mechanism 20 moves forward along actuating rod 7 withoutrotating, while moving block 14 of tilt mechanism 10 rotates idle at thesame place without moving forward along actuating rod 7.

If moving block 24 of telescoping mechanism 20 moves forward asdescribed above, the forward movement force of moving block 24 isconverted into a force for pushing block housing 23 through inner ring26.

That is, if the telescoping motion is implemented, moving block 24 oftelescoping mechanism 20 moves forward along actuating rod 7 movingforward while rotating so as to push block housing 23. As a result,block housing 23 pushes telescoping rod 28 and thereby moving thesupport bracket 8 joined with column tube 1.

Telescoping tube 30 pushes column tube 1 covered by telescoping tube 30while being pushed as described above so as to implement forwardtelescoping to make a steering wheel closer to a driver side.

At this time, tilt mechanism 10 does not make any tilt motion accordingto the forward movement of actuating rod 7 as described above.

In the exemplary embodiment, if unified motor 5 reversely rotates byunified motor ECU 4 (when the rotation direction of unified motor 5 forforward telescoping is referred to as a normal direction), actuating rod7 moves backward while reversely rotating, such that telescoping rod 28is pulled so as to implement backward telescoping. That is, an operationprocess for backward telescoping is the same as the above-mentionedoperation process for forward telescoping, except for the operationdirections of the components.

FIG. 7 shows an operation state for detecting the telescoping motionduring telescoping according to the exemplary embodiment of the presentinvention. If the telescoping motion is implemented, in telescopingmechanism 20, block housing 23 is pushed or pulled by moving block 24 topush or pull telescoping rod 28. The motion of block housing 23 movesmoving knob 51, fixed to block housing 23 in perpendicular thereto, inthe same direction as block housing 23.

The motion of moving knob 51 causes a position change of moving knob 51relative to potentiometer 52, and potentiometer 52 transmits an electricsignal corresponding to the position change of moving knob 51 to unifiedmotor ECU 4.

Therefore, unified motor ECU 4 can exactly recognize the progressiondegree of the telescoping motion, and thus, unified motor ECU 4 cangreatly improve the accuracy of the telescoping motion.

As described above, the motor driven column apparatus according to theexemplary embodiment includes tilt mechanism 10 having tilt clutch 11converting the rotation force of actuating rod 7 moving by one unifiedmotor 5 into a linear movement force for the tilt motion, andtelescoping mechanism 20 having telescoping clutch 21 converting therotation force of actuating rod 7 into a linear movement force for thetelescoping motion. Therefore, the simple configuration with one unifiedmotor 5 makes it easy to secure a package of a knee airbag, a columncollision absorption structure, etc.

Further, the motor driven column apparatus according to the exemplaryembodiment further includes potentiometers 42 and 52 sensing the tiltmotion and the telescoping motion and transmitting the electric signalsto unified motor ECU 4. Therefore, the accuracy of the tilt andtelescoping motions is greatly improved, and the reliability is alsogreatly improved.

For convenience in explanation and accurate definition in the appendedclaims, the terms “upper”, “lower”, “inner” and “outer” are used todescribe features of the exemplary embodiments with reference to thepositions of such features as displayed in the figures.

The foregoing descriptions of specific exemplary embodiments of thepresent invention have been presented for purposes of illustration anddescription. They are not intended to be exhaustive or to limit theinvention to the precise forms disclosed, and obviously manymodifications and variations are possible in light of the aboveteachings. The exemplary embodiments were chosen and described in orderto explain certain principles of the invention and their practicalapplication, to thereby enable others skilled in the art to make andutilize various exemplary embodiments of the present invention, as wellas various alternatives and modifications thereof. It is intended thatthe scope of the invention be defined by the Claims appended hereto andtheir equivalents.

What is claimed is:
 1. A unique motor type motor driven columnapparatus, comprising: a motor which is mounted in a column tube,wherein the column tube is joined with a mounting bracket mounted to avehicle body and covers a steering shaft controlled by a unified motorengine control unit (“ECU”); an actuating rod supported at one or morepositions by the column tube, and rotatable by the motor; a tiltmechanism including a tilt clutch converting a rotation force of theactuating rod into a linear movement force for a tilt motion by controlof the unified motor ECU; a telescoping mechanism including atelescoping clutch converting a rotation force of the actuating rod intoa linear movement force for a telescoping motion by control of theunified motor ECU; and tilt and telescoping sensors sensing the tiltmotion of the tilt mechanism and the telescoping motion of thetelescoping mechanism and transmitting electric signals to the unifiedmotor ECU; wherein the telescoping mechanism is positioned inside thetilt mechanism; wherein the tilt mechanism further includes a firstmoving block and a first block housing accommodating the first movingblock through which the actuating rod passes, and the tilt clutchincludes a first plug rod which is selectively drawn into a firstopening formed in the first block housing to lock the first moving blockso that the first moving block moves linearly or drawn from the firstopening to release the locked state of the first moving block so thatthe first moving block rotates idly; and wherein the telescopingmechanism further includes a second moving block and a second blockhousing accommodating the second moving block through which theactuating rod passes, the telescoping clutch includes a second plug rodwhich is selectively drawn into a second opening formed in the secondblock housing to lock the second moving block so that the second movingblock moves linearly or drawn from the second opening to release thelocked state of the second moving block so that the second moving blockrotates idly.
 2. The unique motor type motor driven column apparatus asdefined in claim 1, wherein the actuating rod has a thread formed on anouter circumference surface along the overall length, an end portion ofthe actuating rod is supported by a support bracket joined with thecolumn tube, and a middle portion of the actuating rod is supported by atelescoping tube covering the column tube.
 3. The unique motor typemotor driven column apparatus as defined in claim 1, wherein the tiltmechanism is joined outside a block housing accommodating a moving blockthrough which the actuating rod passes, and the tilt clutch includes aplug rod which is drawn into an opening formed in the block housing tolock the moving block so that the moving block linearly moves or isdrawn from the opening to release the locked state of the moving blockso that the moving block rotates at the same place, and a tilt bracketincludes a lower end portion linked with the first block housing by alower end hinge shaft and an upper end portion linked with the mountingbracket by an upper end hinge shaft.
 4. The unique motor type motordriven column apparatus as defined in claim 3, wherein inside the tiltbracket, the tilt sensor is installed to be fixed to the first blockhousing.
 5. The unique motor type motor driven column apparatus asdefined in claim 4, wherein the tilt sensor includes a moving knob fixedto the first block housing perpendicular to the first block housing, anda potentiometer horizontally at a position of the moving knob to sense aposition change of the moving knob according to the tilt motion.
 6. Theunique motor type motor driven column apparatus as defined in claim 1,wherein the telescoping mechanism is joined outside a block housingaccommodating a moving block through which the actuating rod passes, thetelescoping clutch include a plug rod which is drawn into an openingformed in the block housing to lock the moving block so that the movingblock linearly moves or is drawn from the opening to release the lockedstate of the moving block so that the moving block rotates at the sameplace, and a telescoping tube is fixed to the second block housing withcovering and covers the column tube.
 7. The unique motor type motordriven column apparatus as defined in claim 6, wherein the telescopingsensor is installed in the second block housing to be fixed to thesecond block housing.
 8. The unique motor type motor driven columnapparatus as defined in claim 7, wherein the tilt sensor includes amoving knob fixed to the first block housing perpendicular to the firstblock housing, and a potentiometer horizontally installed in thetelescoping tube at a position of the moving knob to sense a positionchange of the moving knob according to the tilt motion.
 9. The uniquemotor type motor driven column apparatus as defined in claim 3, wherein,inside the first block housing, a pair of inner rings is positioned onboth sides, that is, left and right, of the first moving block, andoutside the first block housing, an outer ring is positioned.
 10. Aunique motor type motor driven column apparatus, comprising: a motorattached to a telescoping tube that slidably receives a column tubetherein, wherein the telescoping tube is pivotally coupled with avehicle body by a tilt bracket; an actuating rod rotatable by the motor;a tilt mechanism including: a tilt clutch receiving the actuating rodtherethrough and selectively engaged therebetween by a motor controllersuch that a rotation force of the actuating rod is converted into alinear movement of the tilt mechanism so as to make a tilt motion of thecolumn tube; a first block housing; and a first moving block operablymounted in the first block housing with a predetermined gap therebetweenso that the actuating rod passes through and is engaged with the firstmoving block, wherein the first moving block includes a first grooveformed on an outer surface thereof, and wherein the tilt clutch includesa first plug rod which is selectively engaged with the first groovethrough an opening formed in the first block housing by the motorcontroller; and a telescoping mechanism including: a telescoping clutchreceiving the actuating rod therethrough and selectively engagedtherebetween by the motor controller such that a rotation force of theactuating rod is converted into a linear movement of the telescopingmechanism so as to make a telescoping motion of the column tube; asecond block housing; and a second moving block operably mounted in thesecond block housing with a predetermined gap therebetween so that theactuating rod passes through and is engaged with the second movingblock, wherein the second moving block includes a second groove formedon an outer surface thereof, and wherein the telescoping clutch includesa second plug rod which is selectively engaged with the second groovethrough an opening formed in the second block housing.
 11. The uniquemotor type motor driven column apparatus as defined in claim 10, whereinthe tilt bracket is pivotally coupled with the first block housing andthe vehicle body.
 12. The unique motor type motor driven columnapparatus as defined in claim 10, wherein a tilt sensor includes amoving knob fixed to the first block housing, and a potentiometerinstalled in the telescoping tube at a position of the moving knob tosense a position change of the moving knob according to the tilt motionso as to signal tilting amount to the motor controller.
 13. The uniquemotor type motor driven column apparatus as defined in claim 10, whereinthe telescoping mechanism further includes a telescoping rod. an end ofwhich is attached to the second block housing and the other end of whichis attached to a support bracket coupled to the column tube.
 14. Theunique motor type motor driven column apparatus as defined in claim 10,wherein a telescoping sensor includes a moving knob fixed to the secondblock housing, and a potentiometer installed in the telescoping tube ata position of the moving knob to sense a position change of the movingknob according to the telescoping motion so as to signal telescopingamount to the motor controller.